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/****************************************************************************
*
* tfm.h
*
* Auxiliary functions and data structures related to TFM metric files
* (specification).
*
* Copyright 1996-2018 by
* David Turner, Robert Wilhelm, and Werner Lemberg.
*
* This file is part of the FreeType project, and may only be used,
* modified, and distributed under the terms of the FreeType project
* license, LICENSE.TXT. By continuing to use, modify, or distribute
* this file you indicate that you have read the license and
* understand and accept it fully.
*
*/
#ifndef TFM_H_
#define TFM_H_
#include <ft2build.h>
#include FT_INTERNAL_OBJECTS_H
#include FT_INTERNAL_HASH_H
#include FT_INTERNAL_TRUETYPE_TYPES_H
FT_BEGIN_HEADER
/*************************************************************************/
/*************************************************************************/
/*************************************************************************/
/*** ***/
/*** ***/
/*** TFM FONT INFORMATION STRUCTURES ***/
/*** ***/
/*** ***/
/*************************************************************************/
/*************************************************************************/
/*************************************************************************/
typedef struct TFM_FontInfoRec_
{
/* Font Info */
FT_Long cs; /* Check Sum */
/* Metrics */
FT_ULong ds, fs; /* Design Size */
FT_UInt design_size;
FT_ULong slant;
FT_UInt begin_char, end_char;
FT_Long *width, *height, *depth;
/* Font bounding box */
FT_Long font_bbx_w, font_bbx_h;
FT_Long font_bbx_xoff, font_bbx_yoff;
} TFM_FontInfoRec, *TFM_FontInfo;
#define RDS2PT(rds) (tfm->design_size * ((FT_Long)(rds)/(FT_Long)(1<<20)))
/*************************************************************************/
/*************************************************************************/
/***** *****/
/***** TFM PARSER *****/
/***** *****/
/*************************************************************************/
/*************************************************************************/
typedef struct TFM_ParserRec_* TFM_Parser;
typedef struct TFM_Parser_FuncsRec_
{
FT_Error
(*init)( TFM_Parser parser,
FT_Memory memory,
FT_Stream stream );
FT_Error
(*parse_metrics)( TFM_Parser parser );
void
(*done)( TFM_Parser parser );
} TFM_Parser_FuncsRec;
/**************************************************************************
*
* @struct:
* TFM_ParserRec
*
* @description:
* An TFM_Parser is a parser for the TFM files.
*
* @fields:
* memory ::
* The object used for memory operations (alloc and
* realloc).
*
* stream ::
* This is an FT_Stream object.
*
* FontInfo ::
* The result will be stored here.
*/
typedef struct TFM_ParserRec_
{
FT_Memory memory;
FT_Stream stream;
TFM_FontInfo FontInfo;
void* user_data; /* To be checked for compatibility */
} TFM_ParserRec;
/*************************************************************************/
/*************************************************************************/
/***** *****/
/***** TFM Module Interface *****/
/***** *****/
/*************************************************************************/
/*************************************************************************/
typedef struct TFM_ServiceRec_
{
const TFM_Parser_FuncsRec* tfm_parser_funcs;
} TFM_ServiceRec, *TFM_Service;
/* backward compatible type definition */
typedef TFM_ServiceRec TFM_Interface;
FT_END_HEADER
#endif /* PSAUX_H_ */
/* END */
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